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memfs: GetDirInfoByName

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This commit is contained in:
Bill Zissimopoulos 2017-09-27 17:08:41 -07:00
parent 86c0ffa942
commit 0dff9a4c07
2 changed files with 64 additions and 4 deletions
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13
src/dll/fsop.c
View File

@ -1139,11 +1139,16 @@ static NTSTATUS FspFileSystemOpQueryDirectory_GetDirInfoByName(FSP_FILE_SYSTEM *
{
Result = FileSystem->Interface->GetDirInfoByName(FileSystem,
FileContext, FileName, DirInfo);
if (!NT_SUCCESS(Result))
return Result;
if (FspFileSystemAddDirInfo(DirInfo, Buffer, Length, PBytesTransferred))
if (NT_SUCCESS(Result))
{
if (FspFileSystemAddDirInfo(DirInfo, Buffer, Length, PBytesTransferred))
FspFileSystemAddDirInfo(0, Buffer, Length, PBytesTransferred);
}
else if (STATUS_OBJECT_NAME_NOT_FOUND == Result)
{
Result = STATUS_SUCCESS;
FspFileSystemAddDirInfo(0, Buffer, Length, PBytesTransferred);
}
}
else
{

55
tst/memfs/memfs.cpp
View File

@ -42,6 +42,11 @@ FSP_FSCTL_STATIC_ASSERT(MEMFS_MAX_PATH > MAX_PATH,
*/
#define MEMFS_NAMED_STREAMS
/*
* Define the MEMFS_DIRINFO_BY_NAME macro to include GetDirInfoByName.
*/
#define MEMFS_DIRINFO_BY_NAME
/*
* Define the DEBUG_BUFFER_CHECK macro on Windows 8 or above. This includes
* a check for the Write buffer to ensure that it is read-only.
@ -1443,6 +1448,48 @@ static NTSTATUS ReadDirectory(FSP_FILE_SYSTEM *FileSystem,
return STATUS_SUCCESS;
}
#if defined(MEMFS_DIRINFO_BY_NAME)
static NTSTATUS GetDirInfoByName(FSP_FILE_SYSTEM *FileSystem,
PVOID ParentNode0, PWSTR FileName,
FSP_FSCTL_DIR_INFO *DirInfo)
{
MEMFS *Memfs = (MEMFS *)FileSystem->UserContext;
MEMFS_FILE_NODE *ParentNode = (MEMFS_FILE_NODE *)ParentNode0;
MEMFS_FILE_NODE *FileNode;
WCHAR FileNameBuf[MEMFS_MAX_PATH];
size_t ParentLength, BSlashLength, FileNameLength;
WCHAR Root[2] = L"\\";
PWSTR Remain, Suffix;
ParentLength = wcslen(ParentNode->FileName);
BSlashLength = 1 < ParentLength;
FileNameLength = wcslen(FileName);
if (MEMFS_MAX_PATH <= ParentLength + BSlashLength + FileNameLength)
return STATUS_OBJECT_NAME_NOT_FOUND; //STATUS_OBJECT_NAME_INVALID?
memcpy(FileNameBuf, ParentNode->FileName, ParentLength * sizeof(WCHAR));
memcpy(FileNameBuf + ParentLength, L"\\", BSlashLength * sizeof(WCHAR));
memcpy(FileNameBuf + ParentLength + BSlashLength, FileName, (FileNameLength + 1) * sizeof(WCHAR));
FileName = FileNameBuf;
FileNode = MemfsFileNodeMapGet(Memfs->FileNodeMap, FileName);
if (0 == FileNode)
return STATUS_OBJECT_NAME_NOT_FOUND;
FspPathSuffix(FileNode->FileName, &Remain, &Suffix, Root);
FileName = Suffix;
FspPathCombine(FileNode->FileName, Suffix);
//memset(DirInfo->Padding, 0, sizeof DirInfo->Padding);
DirInfo->Size = (UINT16)(sizeof(FSP_FSCTL_DIR_INFO) + wcslen(FileName) * sizeof(WCHAR));
DirInfo->FileInfo = FileNode->FileInfo;
memcpy(DirInfo->FileNameBuf, FileName, DirInfo->Size - sizeof(FSP_FSCTL_DIR_INFO));
return STATUS_SUCCESS;
}
#endif
#if defined(MEMFS_REPARSE_POINTS)
static NTSTATUS ResolveReparsePoints(FSP_FILE_SYSTEM *FileSystem,
PWSTR FileName, UINT32 ReparsePointIndex, BOOLEAN ResolveLastPathComponent,
@ -1683,6 +1730,11 @@ static FSP_FILE_SYSTEM_INTERFACE MemfsInterface =
#else
0,
#endif
#if defined(MEMFS_DIRINFO_BY_NAME)
GetDirInfoByName,
#else
0,
#endif
};
/*
@ -1759,6 +1811,9 @@ NTSTATUS MemfsCreateFunnel(
VolumeParams.NamedStreams = 1;
#endif
VolumeParams.PostCleanupWhenModifiedOnly = 1;
#if defined(MEMFS_DIRINFO_BY_NAME)
VolumeParams.PassQueryDirectoryFileName = 1;
#endif
if (0 != VolumePrefix)
wcscpy_s(VolumeParams.Prefix, sizeof VolumeParams.Prefix / sizeof(WCHAR), VolumePrefix);
wcscpy_s(VolumeParams.FileSystemName, sizeof VolumeParams.FileSystemName / sizeof(WCHAR),